Chicago air quality remains in the top five worst in the world Friday with an Air Quality Alert in place from Canadian wildfire smoke.

Air quality alerts remain in effect through this evening as wildfire smoke from Canada continues to settle across the area. While there may be some improvement near the surface this afternoon, it will still appear hazy for much of the day.

Smoke from wildfires blazing across Canada is once again wafting over huge portions of the U.S. Midwest and worsening air quality there. On August 1 conditions are particularly bad in Minnesota, Iowa and Illinois.